Fire crews were dealing with a 'large scale incident' in a Norwich suburb. 

Norfolk Fire and Rescue Service warned people in Sprowston to keep their windows and doors closed as the situation developed.

A fire service spokeswoman said crews were called to a commercial building fire in Dibden Road at 3.55pm.

Eastern Daily Press: More than six fire crews attended the callout More than six fire crews attended the callout (Image: Mike Sudds)

More than six engines were in attendance and the stop message was received at 4.50pm. 

The building was unoccupied at the time of the fire.